Finding the Fourth Proportional to 491,453.64, 678,415.24 and 330,402.08
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Solution
The fourth proportional to 491,453.64, 678,415.24 and 330,402.08 is: 456,095.53
Step by Step Solution
- Step 1: Write the proportion equation
491,453.64 : 678,415.24 = 330,402.08 : x - Step 2: Convert to fraction form
491,453.64/678,415.24 = 330,402.08/x - Step 3: Cross multiply
491,453.64x = 678,415.24 × 330,402.08 - Step 4: Simplify right side
491,453.64x = 224,149,806,399.70 - Step 5: Solve for x
x = 224,149,806,399.70/491,453.64 - Step 6: Final answer
x = 456,095.53
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.